[The germ layer theory, its present status and significance in biology and medicine].
D003582:Cytogenetics; D004626:Embryology / Q000266:history; D005855:Germ Layers; D049672:History, 19th Century; D049673:History, 20th Century; D008511:Medicine
Teoriia zarodyshevykh listkov, ee sovremennoe sostoianie i znachenie dlia biologii i meditsiny.